class_docstr: LocalImageSet wraps a list of ImageFeature
docstr: get label list from ImageSet
docstr_tok: ["get","label","list","from","ImageSet"]
code: def get_label(self):
      """
      get label list from ImageSet
      """
      labels = callZooFunc(
          self.bigdl_type, "localImageSetToLabelTensor", self.value
      )
      return map(lambda tensor: tensor.to_ndarray(), labels)
  
imports: from bigdl.dllib.feature.transform.vision.image import ImageFrame
  from bigdl.dllib.utils.common import *
  from bigdl.dllib.utils.file_utils import callZooFunc
  from bigdl.dllib.utils.log4Error import *
label_desc: Use image node_id 3 for calling the LocalImageSet obj's underlying member method code with example usage: obj.get_label() and returns: map